Murphy 12” Television V150B
From Object Wiki
| Murphy 12" Television, Type V150B | |
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| Manufacturer | (unknown) |
| Production years | 1951 |
| Production location | (unknown) |
Murphy Radio Ltd of Welwyn Garden City had been actively working on the development of television receivers since 1933. Post-war television development benefited directly from wartime radar research and from the large numbers of radar technicians trained in the war. This is a Murphy 12" Television, Type V150B.
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[edit] How it works
In a black-and-white TV, the screen is coated with white phosphor and the electron beam “paints” an image onto the screen by moving the electron beam across the phosphor a line at a time. To paint the entire screen, electronic circuits inside the TV use the magnetic coils to move the electron beam in a “raster scan” pattern across and down the screen. The beam paints one line across the screen from left to right. It then quickly flies back to the left side, moves down slightly and paints another horizontal line, and so on down the screen. As the beam paints each line from left to right, the intensity of the beam is changed to create different shades of black, grey and white across the screen. Because the lines are spaced very closely together, your brain integrates them into a single image. A TV screen of this period had 405 lines visible from top to bottom.
[edit] Memories
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Do you remember this television? Add your memories. |
[edit] In the Science Museum
The Science Museum acquired a Murphy 12” V150B television in 1984, from Rank Radio International. The object's inventory number is 1984-805.
Audio Tour Call 020 7112 2020 when Prompted dial 910
This object is currently on display in the Dan Dare & the Birth of Hi-Tech Britain exhibition at the Science Museum, London.